Question

Please answer it fast!!

Answer 1

5. 9a²b²-6ab-4 - 7a²b² + 14 +3ab+8a²b²

= 10a²b² -3ab + 10

6.

x²+3x-6 - (5x²-6x-8)

= x²+3x-6 + 5x² + 6x +8

= 6x² +9x + 2

rest i have answered earlier

Answer 2

1) The numerical coefficient of  y²in 8x²y-xy²-4y²   is -4

2) To identify like terms -7mn²,10m²n,3m²n²,10,-m²n,m²n²,10mn²,-37

i) -7mn²,10mn²

ii)10m²n,-m²n

iii) 10,-37

iv)3m²n²,m²n²

3) i)-10xy+8xy is Binomial  because it consists of 2 terms x ,y

ii)-11 -23a²b  is Binomial because it consists of 2 terms

iii)-234 is a Monomial because it consists of only one term

iv)z²-x²y-zy² is Trinomial because it consists of 3 terms

4) a) refer to attachments

b)needs to be done on own

5) Add 9a²b²-6ab -4 , -7a²b²,14+3ab+8a²b²

group like terms -  {(9a²b²)+(-7a²b²)+(8a²b²) }{(-6ab)+(3ab)}{(-4)+(+14)}

{9a²b²+a²b²}{-3ab}{+10}

10a²b²-3ab+10

Answer -10a²b²-3ab+10

6) Subtract :-x²+3x-6 from 5x²-6x-8

Let's simplify step-by-step.

5x²−6x−8−(x²+3x−6)

Distribute the Negative Sign:

=5x²−6x−8+−1(x²+3x−6)

=5x²+−6x+−8+−1x²+−1(3x)+(−1)(−6)

=5x²+−6x+−8+−x²+−3x+6

Combine Like Terms:

=5x²+−6x+−8+−x²−3x+6

=(5x²+−x²)+(−6x+−3x)+(−8+6)

=4x²+−9x+−2

Answer:

=4x²−9x−2

7)what should be added to 3a+9b+6 to get -5a +2b+20

Let's simplify step-by-step.

−5a+2b+20−(3a+9b+6)

Distribute the Negative Sign:

=−5a+2b+20+−1(3a+9b+6)

=−5a+2b+20+−1(3a)+−1(9b)+(−1)(6)

=−5a+2b+20+−3a+−9b+−6

Combine Like Terms:

=−5a+2b+20+−3a+−9b+−6

=(−5a+−3a)+(2b+−9b)+(20+−6)

=−8a+−7b+14

Answer:

=−8a−7b+14

8) 3p²q−2pq²−pq

Evaluate for p=0,q=1

3(0²) x (1)  −  (2) x (0) x (1²)  −  (0) x (1)

3(0²) x (1)  −  (2) x (0) x (1²)  −  (0) x (1)

= 0

9) q³−q²

Evaluate for q=10

10³−10²

10³−10²

1000-100

=900

10) $\frac{14m}{3} -2m$

$\frac{14m}{3}+ -2m$

Combine Like Terms:

$\frac{14m}{3}+ -2m$

$(\frac{14m}{3}+ -2m)$

$(\frac{14m}{3}-\frac{6m}{3})$

$-\frac{8m}{3}$

Evaluate for m=3

$=-\frac{8\times 3}{3}$

$=-\frac{8\times 3}{3}$

$=\frac{-8}{1}$

$=-8$